Well, if there's really no other option, taking a flyer on a slow shutter speed might be better than making no attempt at all. But yeah, I'd say that even 1/25 is really stretching it for most people with a MF SLR.
If you're shooting in a forest, of course, every fallen stick is a potential monopod.
Try setting approx focus and then shifting your body back and forth to do the fine focus. The awareness of your position inherent in focusing using your position often means good results.
My next couple rolls will be on a tripod and specifically explore the lens' DOF. Probably very boring shots down the neighbor's wooden fence. I need to learn how to use this instead of "work around" it. It will definitely improve my photography in general.